You will find that the US uses the Impossible Patty while UK serves a plant based patty by the Vegetarian Butcher.
In a way I was glad that the patty in UK was different because I have already tried the Impossible elsewhere.
Prices are different at different locations for Burger King in UK so it makes sense to try it where it is cheapest.
I don't know what the cheapest price was but I went to Stratford because it was cheaper than the two in Croydon.
Well, the rebel burger looked the part but unfortunately I was disappointed with the patty itself because it was tasteless and I didn't like the texture.